Tony LaRussa walked away after winning a title. There doesn't need to be an underlying reason for him walking away. He's turning 69 in two months. That's all the reason he needs.

In the 1970s, Dick Williams walked away from the A's, with a year left on his contract, announcing that he was leaving during network coverage of the postgame celebration of his second straight World Series championship. He didn't retire, though, He went on to manage the Angels and eventually make Bill Melton's life miserable.

Jim Leyland strikes me as someone who wants to retire. It isn't as if the White Sox Sunday uniforms this season filled him with a desire to return to Chicago where he was coaching third under Tony LaRussa for 1983 Western Division Champions.